FACULTY OF PHARMACY
B. Pharmacy 3/4 II Semester (Suppl.) Examination, November 2016
Subject: Physical Pharmacy II
Time: 3 Hours Max.Marks: 70
Note: Answer all questions. All questions carry equal marks.
1 Define the use of phase rule with examples. 7
Write a note on solubility of solids in liquids with suitable examples. 7
OR
Explain the use of distribution ratio in extraction. 5
Derive an equation to illustrate the influence of pH on the solubility of weak
electrolytes. 9
2 How can you determine the order of a chemical reaction? 5
Explain various complex reactions with suitable examples. 9
OR
Explain various theories on the influence of temperature on reaction rate. 7
Explain first order reaction rate. 7
3 Write a note on hydrophile-Lipophile balance classification. 5
Explain various types of adsorption isotherms with neat sketches. 9
OR
Explain the concept of electric double layer. 7
Explain any one method of determining surface tension. 7
4 Write the pharmaceutical applications of colloids. 7
Discuss various derived properties of powders and their applications. 7
OR
Explain kinetic properties of colloids. 7
Explain the methods for determining particle size. 7
5 Discuss about thixotropy and its application in formations. 14
OR
Describe flow properties of non-newtonian systems. 10
Classify polymers. 4